From: Lee Jones <lee.jones@linaro.org>
Date: Tue, 30 Jun 2020 14:33:45 +0100
Subject: gpio: gpio-mlxbf2.c: Provide __releases() annotation to stop
 confusing Sparse
Git-commit: a7a9ad232f02e6aa659cc9b58b72b1a30dccd1a6
Patch-mainline: v5.9-rc1
References: jsc#SLE-16098

Sparse cannot peer into other functions to see when and if locks are
acquired and released, thus it simply warns that a 'context imbalance'
is detected instead.  Let's be kind to Sparse and let it know that
this behaviour is intentional.

 drivers/gpio/gpio-mlxbf2.c:125:12: warning: context imbalance in 'mlxbf2_gpio_lock_acquire' - different lock contexts for basic block
 drivers/gpio/gpio-mlxbf2.c:151:13: warning: context imbalance in 'mlxbf2_gpio_lock_release' - unexpected unlock

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Asmaa Mnebhi <asmaa@mellanox.com>
Cc: Asmaa Mnebhi <Asmaa@mellanox.com>
Link: https://lore.kernel.org/r/20200630133345.2232932-11-lee.jones@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 drivers/gpio/gpio-mlxbf2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c
index 861a8d0a84be..befa5e109943 100644
--- a/drivers/gpio/gpio-mlxbf2.c
+++ b/drivers/gpio/gpio-mlxbf2.c
@@ -149,6 +149,8 @@ static int mlxbf2_gpio_lock_acquire(struct mlxbf2_gpio_context *gs)
  * Release the YU arm_gpio_lock after changing the direction mode.
  */
 static void mlxbf2_gpio_lock_release(struct mlxbf2_gpio_context *gs)
+	__releases(&gs->gc.bgpio_lock)
+	__releases(yu_arm_gpio_lock_param.lock)
 {
 	writel(YU_ARM_GPIO_LOCK_RELEASE, yu_arm_gpio_lock_param.io);
 	spin_unlock(&gs->gc.bgpio_lock);
-- 
2.28.0